Mounting for eyeglasses and spectacles.



W. S. SAMSON. MOUNTING FOR EYEGLASSES AND SPEGTAOLES.

unmqnmn FILED APR. e, 1910.

Patented July 5', 1910.

I wug/wtoz Wz' liz'avz @Savzsam WILLIAM STANLEY SAMSON, OF LANCASTER, OHIO.

MOUNTING FOR EYEGLASSES AND SPECTACLES.

Specification of Letters Patents Patented July 5, it ltti.

Application filed April 6. 1910. SeriatNo. 553.750.

To all ar /tom it "may concern:

Be it known that I, \ViLLIAM S. Samson, a citizen of the United States, residing at Lancaster, in the county of Fair-field and State of Ohio, have invented new and useful Improvements in Mountings for Eyeglasses and Spectacles, of which the following is a specificatio.

This invention relates to mountings for eyeglasses and spectacles and relates more particularly to means for securely fastening the lenses to the mounting.

lhe principal object of the invention is the provision of an improved screw especially'adapted tor the purpose mentioned which has teeth, corrugations or the like on the under side of its head to mesh with the corresponding teeth, corrugations or the like on the stud to which the lens is attached, wherein the screw after being driven home will he prevented from loosening by un screwing.

With such objects in view, and others as will app a has the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described hereinafter and set forth with particularity in the claim appended hereto. I

In the accompanying (1 swing, which illustrates one embodiment of the inven tion; Figure 1 is a perspective View of a portion of an eyeglass mounting with. the lens and screw detached. Fig. 2 is a detail sectional View showing the lens secured to the mounting. Fig. 23 is a plan view of Fig. 2.

Similar reference characters are employed vto designate corresponding parts throughout the severai views.

teferring to the drawing, 1. designates a stud of a spectacle or eyeglass mounting, which has spaced members or jaws '2 3 between which the lens 4 is clamped, the lens having the usual screw opening {3 through Wlit'l) passes the screw ti. The member :2 has an opening 7 that is deeply countersunk l'or receiving" the head 8 of "the screw, and the member ii has a threaded opening 0 into which the shank of the screw engages. 'ihe countersunk portion Itlot' the opening- T is provided with teeth or corrugations it and the l'rusttri-onicai portion 12 of the screw head 9 provided with teeth or corrugations to correspond with the teeth or eorrugations ll so as to interlock therewith when the screw is driven home for the purpose of preventing unscrewing or loosening of the screw.

In applying the lens, the same is inserted between the members 2 and 3 and adjusted until the opening 5 registers with the open ings of the said members, and then the screw is inserted in these registering openin s and the lower end of the screw is engaged with the threads of the opening 9 by turning the screw. its the screw tightens, the memhers 2 and 3 are drawn to ether and ilac'ed under tension and during the last part of the turning movement of the Screw, the teeth or cor-- rugations thereon will ride freely over the. teeth or corrugations in the countersink of the opening I, and when the screw is turned as tight as itcan be, the said teeth or corrugations will interlock and prevent the screw from loosening by turning backwardly. When the screw is thus drawn as tight as possible, the lower member 3 tends to spring dmvnwardly and carry the screw with it, while the upper member 2 tends to spring up 'ardly so that the tension of the two members assists in maintaining the interlocking engagement between the teeth or corrugations on the head of the screw and the socket into which it enters. By making the socket or countersink deeper than the head of the screw requires, a circular border of corrugations or teeth will be ex posed around the head of the screw and thus the purchaser can see at a glance that he receiving a pair of glasses or spectacles having the antilooseuing screws.

From the foregoing description taken in t'tHllltt'iiOll with the accompanying draw ing, the advantages of the construction and of the method of operation will he readil apparent to those skilled in the art to whicn the invention relates, and while i have de scribed the principle of operation of the invention, together with the device which I now consider to he the best embodiment thereof, I desire to have it understood that the apparatus shewnis merely ilinstrative and that such changes may he made when desired as are within the scope of the claim.

What It claim as new and. desire to secure hy Letters Patent. is:---

in eyeglass mounting comprising a stud having spaced resilient members provided. with registering openings, one at the open ings being countersunk and having serrations and theether provided with screw let? 3 BEST AVAILABLE. eoPY 63,855

threads, a lens disposed hetween the memheld under tension to maintain the serrw, 10 hers, a screw passing through the lens and tions of the screw engaged with the serrahaving its ends disposed with the openings tions of the said member. of the said members and threaded in one of In testimony whereof I afiix my signa- 5 the said openings, :1 head on the screw, and ture in presence of two witnesses.

serrations on the under side of the head WILLIAM STANLEY SAMSON. engaging the first mentioned serrations to Witnesses: I H. M. SAMSON,

,revent the loosening of the screw when the Boer. SCHULTZ.

atter is tightened, the said members being 

